DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.25683#0073
PRACTICAL PERSPECTIVE.
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line by maxim 1. On the sloping surface L, the vanishing line of which is Y W it tends
from n to r to the point W by the same maxim. On the parallel e surface G the part
m n is by maxim 4th parallel to the ray X W Y drawn from Sol 2 to the vanishing point X*.
APPLICATION of the above MAXIMS.
( SHADOWS- No. 1. The San in the plane of the Picture.)
Tn this the sun's rays will be parallel to each, other and to the rising line of the sun's
elevation; which is marked on the plate, as well its the vanishing lines ot the different sur-
faces. The receeding lines of the beam on the wall (marked 1) tend to the vanishing
point V2-. To find its shadow on the wall draw the ray of the sun from V2 until it inter-
outlines of shadow required by maxim 1: these are terminated by rays, as a b in the example.
The upper bar of the lamp (marked 2) has the same vanishing point, and therefore its
shadow on the wall and on the side of the sentry box, tends also from the point Umbra D
maxim 2, The prop-bar of tire lamp tends to X3. Then (by maxim 1) the ray drawn from
shadow on the wall and side of the sentry box: its shadow on the front over the door of
the box tends to V3 by maxim 2.
house are found by maxim 1, at umbra 3 and 4 in the vanishing line oj planes A, and the
shadows are drawn as in the example of the lamp (2).
The post (marked) 4 has its upright lines in planes parallel to the picture and therefore
its shadows on the ground will (by Maxim 3, Case 1.; be parallel to the horizontal line;
and that part of its shadow on the front of the house will be parallel to the vanishing line
of planes A.
sects the vanishing line of planes A in Umbra 1, which will be the vanishing point for the
The part of the shadow on the roof of the sentry box tends to the vanishin point X2 by
\3 gives the point Umbra 2 on the vanishing line of planes A for the directing point of its
The upper bar of the sign (marked 3) and its prop-bar have the vanishing line of
their plane in the perpendicular at V4; which is the vanishing point ot the upper bar
as Vo is of the prop. The points for the direction of their shadows on the front of the
M
45
line by maxim 1. On the sloping surface L, the vanishing line of which is Y W it tends
from n to r to the point W by the same maxim. On the parallel e surface G the part
m n is by maxim 4th parallel to the ray X W Y drawn from Sol 2 to the vanishing point X*.
APPLICATION of the above MAXIMS.
( SHADOWS- No. 1. The San in the plane of the Picture.)
Tn this the sun's rays will be parallel to each, other and to the rising line of the sun's
elevation; which is marked on the plate, as well its the vanishing lines ot the different sur-
faces. The receeding lines of the beam on the wall (marked 1) tend to the vanishing
point V2-. To find its shadow on the wall draw the ray of the sun from V2 until it inter-
outlines of shadow required by maxim 1: these are terminated by rays, as a b in the example.
The upper bar of the lamp (marked 2) has the same vanishing point, and therefore its
shadow on the wall and on the side of the sentry box, tends also from the point Umbra D
maxim 2, The prop-bar of tire lamp tends to X3. Then (by maxim 1) the ray drawn from
shadow on the wall and side of the sentry box: its shadow on the front over the door of
the box tends to V3 by maxim 2.
house are found by maxim 1, at umbra 3 and 4 in the vanishing line oj planes A, and the
shadows are drawn as in the example of the lamp (2).
The post (marked) 4 has its upright lines in planes parallel to the picture and therefore
its shadows on the ground will (by Maxim 3, Case 1.; be parallel to the horizontal line;
and that part of its shadow on the front of the house will be parallel to the vanishing line
of planes A.
sects the vanishing line of planes A in Umbra 1, which will be the vanishing point for the
The part of the shadow on the roof of the sentry box tends to the vanishin point X2 by
\3 gives the point Umbra 2 on the vanishing line of planes A for the directing point of its
The upper bar of the sign (marked 3) and its prop-bar have the vanishing line of
their plane in the perpendicular at V4; which is the vanishing point ot the upper bar
as Vo is of the prop. The points for the direction of their shadows on the front of the
M